pam_ldap in nss_ldap on Red Hat Enterprise Linux 4, Fedora Core 3 and earlier, and possibly other distributions does not return an error con
pam_ldap in nss_ldap on Red Hat Enterprise Linux 4, Fedora Core 3 and earlier, and possibly other distributions does not return an error condition when an LDAP directory server responds with a PasswordPolicyResponse control response, which causes the pam_authenticate function to return a success code even if authentication has failed, as originally reported for xscreensaver.
- Published
- Oct 10, 2006
- Updated
- Jun 16, 2026
- EPSS
- 4.1% · 90th percentile
- CWE
- CWE-755
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| fedoraproject | fedora core | cpe:2.3:o:fedoraproject:fedora_core |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux for ibm z systems | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems |
| redhat | enterprise linux for power big endian | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux3.1
- fedoraproject fedora coreup to core_3.0 inclusive
- redhat enterprise linux4.0
- redhat enterprise linux desktop4.0
- redhat enterprise linux for ibm z systems4.0_s390
- redhat enterprise linux for ibm z systems4.0_s390x
- redhat enterprise linux for power big endian4.0
- redhat enterprise linux server4.0
- redhat enterprise linux workstation4.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:11 | libpam-ldap | before 180-1.2 | 180-1.2 |
| Debian:3.1 | libpam-ldap | before 178-1sarge3 | 178-1sarge3 |
| Red Hat:enterprise_linux:4::as | nss_ldap | before 0:226-17 | 0:226-17 |
| Red Hat:enterprise_linux:4::as | nss_ldap-debuginfo | before 0:226-17 | 0:226-17 |
Same product
fedoraproject: all recordsOther highest-scoring records for the same primary product.
- CVE-2007-3103The init.d script for the X.Org X11 xfs font server on various Linux distributions might allow local users to change the permissions of arbi24Monitor
- CVE-2007-6283Red Hat Enterprise Linux 5 and Fedora install the Bind /etc/rndc.key file with world-readable permissions, which allows local users to perfo19Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:libpam-ldap | 180-1.2 · Debian:11 | Package registry (OSV) |
| red hat:nss_ldap | 0:226-17 · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
| red hat:nss_ldap-debuginfo | 0:226-17 · Red Hat:enterprise_linux:4::as | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-755 · Improper Handling of Exceptional ConditionsCVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.padl.com/show_bug.cgi?id=291
- rhn.redhat.com/errata/RHSA-2006-0719.html
- secunia.com/advisories/22682
- secunia.com/advisories/22685
- secunia.com/advisories/22694
- secunia.com/advisories/22696
- secunia.com/advisories/22869
- secunia.com/advisories/23132
- secunia.com/advisories/23428
- security.gentoo.org/glsa/glsa-200612-19.xml
- securitytracker.com/id?1017153
- www.debian.org/security/2006/dsa-1203
- www.mandriva.com/security/advisories?name=MDKSA-2006:201
- www.novell.com/linux/security/advisories/2006_27_sr.html
- www.securityfocus.com/archive/1/447859/100/200/threaded
- www.securityfocus.com/bid/20880
- www.trustix.org/errata/2006/0061/
- www.vupen.com/english/advisories/2006/4319
- bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207286
- issues.rpath.com/browse/RPL-680
Vendor advisories and official records. Exploit/PoC links are deliberately left out.